| 单词 | spot wobble |
| 释义 | > as lemmasspot wobble spot wobble n. now historical a small periodic oscillation of the scanning spot in a cathode ray tube television, formerly used to render the scanning lines less noticeable. ΘΚΠ society > communication > broadcasting > television > visual element > [noun] > signals, types, or parts of picture frequency1926 picture signal1927 black level1935 line frequency1936 pedestal1937 line scan1938 picture black1938 white level1938 porch1941 test signal1945 spot wobble1950 luminance1953 1950 Wireless World Mar. 84 (heading) Television spot-wobble. Simple technique for combating 'lininess' in the raster. 1951 Sun (Baltimore) 19 Oct. (B ed.) 5/7 First sets to incorporate ‘spot wobble’ are 15-inch home receivers. Focusing is by the normal line-pattern method, but the flick of a switch converts to ‘spot wobble’. 1956 B.B.C. Engin. Monogr. No. 1. 5/2 The obliteration of the line structure by carefully adjusted spot wobble is of course essential in any telerecording system if beat patterns are to be avoided when the film is scanned. 2006 D. Howett Television Innovations vii. 88/1 The lower UK line system was given an improved appearance by using a system called spot-wobble, which effectively blurred the coarser 405-line structure. < as lemmas |
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